We — Manton Reece and Brent Simmons — have noticed that JSON has
become the developers’ choice for APIs, and that developers will
often go out of their way to avoid XML. JSON is simpler to read
and write, and it’s less prone to bugs.

So we developed JSON Feed, a format similar to RSS and Atom but in
JSON. It reflects the lessons learned from our years of work
reading and publishing feeds.